磁针

According to Faraday's experiment, there must be a wire testing the existence of the electric field, just as there must be a magnetic pole, or needle, testing the existence of a magnetic field in Oersted's experiment.

根据法拉第的实验，必须有导线来检验电场是否存在，正像在奥斯特的实验中也必须有磁极或磁针来检验磁场是否存在一样。

Much later the Chinese polymath scientist Shen Kuo (1031-1095 AD) was the first to describe the magnetic needle-compass, along with its usefulness for accurate navigation by discovering the concept of true north.

更晚的中国polymath科学家申适（公元1031年至1095年）是第一次来描述磁针，指南针，连同其效用的准确导航的概念，发现真正的北方。

If the lateral release, the needle hit the side or in a fixed location, quickly lost their effectiveness ash, which we must pay attention to.

如果侧放，令磁针打侧跌在固定位置，很快便灰失去功效，这一点大家必须留意。

Whatever on the position of the needle.

没有任何力在作用，所存在的势差对磁针的位置不会产生任何影响。

Longfei I said that Zheng He's fleet in the use of the compass also combine indigenous methods, one known as "water law", that is, moon and stars refer to the wind direction and trend of such factors, in the middle of the compass, one bowl, bowl of water, and then fish-shaped needle float on water, to maintain a balance, that is able to determine the direction and the location of boat.

席龙飞介绍说，郑和下西洋船队在使用罗盘时，还结合土办法，一种称为&盛水法&，即参考日月星辰的方位及风向潮流等因素，在罗盘中间放一个碗，碗里盛水，然后将鱼形磁针浮于水面，保持平衡，即能确定行船的方向及位置。

And Anyang in the area as the center, only Wu-rich Cishan magnet may be grinding needle.

而在以安阳为中心的地域内，惟有武安磁山盛产磁石，可磨制磁针。

From the use of spiculas (small sharp-pointed spikes), bamboo needles, and ceramic needles to copper needles, silver needles, and today's stainless steel needles as well as magnetic needles, needles have always been basic necessity of acupuncture.

从砭石发展到九针，才有正式的针法。古代最先用骨针、竹针、陶针，后来用的是铜针、金针、银针，现代用不锈钢针、也有用磁针。

Let us assume that the wire is bent to form a circle, in the centre of which a magnetic needle is placed, both wire and needle lying in the same plane.

几年以前某些非常有名的物理学家仍想在电路断开时使磁针移动位置，但毫无结果。

The iron in the ship caused a deviation of the magnetic needle of the compass.

船中的铁使指南针的磁针发生偏差。政策方面的偏差。

The iron in the ship caused a deviation of the magnetic needle of the compass.

注：船上的钢铁使指南针的磁针产生了偏差。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。